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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A247367 Number of ways to write n as a sum of a square and a nonsquare.

Table of values

n a(n)
0 0
1 0
2 1
3 2
4 1
5 1
6 3
7 3
8 2
9 2
10 2
11 4
12 4
13 2
14 4
15 4
16 3
17 3
18 4
19 5
20 3
21 5
22 5
23 5
24 5
25 2
26 4
27 6
28 6
29 4
30 6
31 6
32 5
33 6
34 4
35 6
36 5
37 5
38 7
39 7
40 5
41 5
42 7
43 7
44 7
45 5
46 7
47 7
48 7
49 6
50 5
51 8
52 6
53 6
54 8
55 8
56 8
57 8
58 6
59 8
60 8
61 6
62 8
63 8
64 7
65 5
66 9
67 9
68 7
69 9
70 9
71 9
72 8
73 7
74 7
75 9
76 9
77 9
78 9
79 9
80 7
81 8
82 8
83 10
84 10
85 6

List of values

[0, 0, 1, 2, 1, 1, 3, 3, 2, 2, 2, 4, 4, 2, 4, 4, 3, 3, 4, 5, 3, 5, 5, 5, 5, 2, 4, 6, 6, 4, 6, 6, 5, 6, 4, 6, 5, 5, 7, 7, 5, 5, 7, 7, 7, 5, 7, 7, 7, 6, 5, 8, 6, 6, 8, 8, 8, 8, 6, 8, 8, 6, 8, 8, 7, 5, 9, 9, 7, 9, 9, 9, 8, 7, 7, 9, 9, 9, 9, 9, 7, 8, 8, 10, 10, 6]

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